> If you want to validate the domain, do a DNS lookup on the domain or > some such. I don't think there are standard modules to provide this > functionality included with python. You could try using the socket > module, and reading up on the relevant protocols, or making calls to > external programs.
I agreed. I made quick code for this. # Email address validator # # This module is in Public Domain # # This module was written for replying to # http://groups.google.com/group/comp.lang.python/browse_thread/thread/80d7d31bebc09190 # * It requires dnspython (http://www.dnspython.org/). # * It is a simple prototype. # * It would be slow if query mass email addresses, having cache mechanism # would be very helpful. # * It only checks hostname of email address. # # Author : Yu-Jie Lin # Creation Date: 2008-07-02T20:09:07+0800 import dns.resolver def CheckEmail(email): """This function directly extracts the hostname and query it""" email_parts = email.split('@') if len(email_parts) != 2: return False # Start querying try: answers = dns.resolver.query(email_parts[1], 'MX') except dns.resolver.NoAnswer: # This host doesn't have MX records return False except dns.resolver.NXDOMAIN: # No such hostname return False # Possible a valid hostname return True I also wrote a short blog post for this post and the code, if you are interested, you can read it at http://thetinybit.com/Blog/2008-07-02-2047-EmailHostnameCheck -- http://mail.python.org/mailman/listinfo/python-list
